Characteristics of the couples included per hospital
| Characteristics | Total (N=222) | p Value* |
|---|---|---|
| Mean (SD) age of woman (years)† | 33.7 (3.86) (21–41) | |
| Hospital 1 (N=153) | 33.8 (3.63) (21–41) | |
| Hospital 2 (N=14) | 30.9 (4.54) (25–39) | 0.032 |
| Hospital 3 (N=15) | 34.6 (3.96) (28–40) | |
| Hospital 4 (N=28) | 33.4 (4.53) (25–41) | |
| Hospital 5 (N=12) | 35.2 (2.86) (30–38) | |
| Mean (SD) duration of infertility (years)† | 4.0 (2.00) (1–13) | |
| Hospital 1 (N=139) | 4.1 (2.20) (1–13) | 0.256 |
| Hospital 2 (N=11) | 4.0 (1.26) (2–6) | |
| Hospital 3 (N=11) | 4.3 (1.85) (2–8) | |
| Hospital 4 (N=26) | 3.2 (1.22) (1–6) | |
| Hospital 5 (N=12) | 4.0 (1.13) (2–6) | |
| Presence of a good quality embryo (% yes) | 68.9% | |
| Hospital 1 (N=153) | 72.6% | 0.406 |
| Hospital 2 (N=14) | 64.3% | |
| Hospital 3 (N=15) | 66.7% | |
| Hospital 4 (N=28) | 60.7% | |
| Hospital 5 (N=12) | 50.0% | |
| Previous pregnancies‡ (% yes) | 43.0% | |
| Hospital 1 (N=153) | 45.8% | 0.403 |
| Hospital 2 (N=14) | 21.4% | |
| Hospital 3 (N=14) | 50.0% | |
| Hospital 4 (N=28) | 39.3% | |
| Hospital 5 (N=12) | 33.3% |
*p<0.05 is significant.
†Calculated on 31 December 2008 based on information filled out in patients’ questionnaires. As a result, we have a higher mean for age and duration of infertility than van Peperstraten et al.32
‡Based on the question: ‘Have you ever been pregnant?’.